We're building a new house and it was not water tight for several weeks. The plywood in a few areas is delaminating and other sheets have deep ridges, pictured below. We need your opinions on whether the pieces with ridges should be replaced. Quite a number of pieces have this issue. The builder has already agreed to replace the delaminating sheets. We plan to have oak floors and porcelain tile with radiant heat in the bathrooms.
Also, once plywood starts to delaminate will it continue even if no longer subjected to rain?